visible human browsers: formative evaluation based on student feedback
DESCRIPTION
Visible Human Browsers: Formative Evaluation Based on Student Feedback. Neil Skov, EdD Wen Yu Lee, MS Deborah S. Walker, DNSc, CNM, FACNM Carl Berger, EdD. Introduction. Context: Next Generation Internet – Visible Human Project (NGI–VHP) User Interface and Evaluation Team Purpose: - PowerPoint PPT PresentationTRANSCRIPT
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Visible Human Conference, 2002
Visible Human Browsers:Formative Evaluation
Basedon Student Feedback
Neil Skov, EdD
Wen Yu Lee, MS
Deborah S. Walker, DNSc, CNM, FACNM
Carl Berger, EdD
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Visible Human Conference, 2002
Introduction
Context: Next Generation Internet –
Visible Human Project (NGI–VHP) User Interface and Evaluation Team
Purpose: Student use of Visible Human data sets Formative evaluation of user interfaces
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Visible Human Conference, 2002
Introduction Cont.
Research Questions: What is the most effective way for
student users to interact with VH browser interfaces?
What are students’ perceptions of the usefulness of the VH software for learning anatomy?
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Visible Human Conference, 2002
Background
Formative Evaluation Early feedback Support design decisions
Types of Review Expert or Formal Potential users
Usability Acceptance
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Visible Human Conference, 2002
Methods
Hybrid Methodology Qualitative Semi-structured interview Interview about instances Focus group
Video Taping
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Visible Human Conference, 2002
Methods Cont.
Participants Second-year medical students One year gross anatomy Three groups of four
Group 1 Group 2 Group 3 0 Female 4 Male
2 Female 2 Male
1 Female 3 Male
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Visible Human Conference, 2002
Methods Cont.
Procedure Demonstration Student trials Discussion
Repeat for Each Tool
Summary Discussion
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Visible Human Conference, 2002
Methods Cont.
Software Edgewarp 3D (EW)
PSC Volume Browser (PVB)
Other Anatomy content database Edgewarp fly-through simulation
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Visible Human Conference, 2002
Edgewarp 3D
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Visible Human Conference, 2002
PSC Volume Browser
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Visible Human Conference, 2002
Data Analysis
Qualitative Video Analysis Joint viewing Repetition Notes (tables)
Search for Patterns Thematic Organization
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Visible Human Conference, 2002
Data Analysis Cont.
Event Summary Table
EventSeq.
#
GroupRec.
#
VHTool Observation/
Comment
Theme
Code
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Visible Human Conference, 2002
Data Analysis Cont.
Interactions with VH software Controls Interpretation of display Strategies for use
Learning Anatomy Student requirements for anatomy
content Use of the software for learning
anatomy
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Visible Human Conference, 2002
Data Analysis Cont.
Suggestions for Control devices New functions Anatomy topics
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Visible Human Conference, 2002
Selected Results
Interactions with VH Software: Controls Like dragging yellow box (EW) Preference for button bars Image pixelation problem
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Visible Human Conference, 2002
Selected Results Cont.
Interactions with VH Software: Display Interpretation Problems Location of cut plane Aspect Motion
Translation Rotation
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Visible Human Conference, 2002
Results Cont.
Learning Anatomy Labels, labels, labels, … Head-and-neck and pelvis Usefulness
Secondary resource Steep learning curve
Value increase with time
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Visible Human Conference, 2002
Principal Conclusions
Answers to Research Questions: Best Interface Features? Familiar button bars, but … Ability to jump/return to preset views Dragging cut plane in context window
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Visible Human Conference, 2002
Conclusions Cont.
Answers to Research Questions: Usefulness for Learning Anatomy? Importance of models Secondary learning tool ??? Avoid excessive cognitive load
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Visible Human Conference, 2002
Conclusions Cont.
Recommendations Image refresh & synchronization
NGI !!! Compression !!!
Orientation support Models “Compass”
Selectable user modes
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Visible Human Conference, 2002
Conclusions Cont.
Remaining Issues Student study preferences Possible order effect
Future Work
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Visible Human Conference, 2002
Credits
National Library of MedicineBrian Athey, P.I. (Contract: N01 - LM - 0 - 3511)
Edgewarp 3DFred Bookstein & William Green
PSC Volume BrowserArt Wetzel & Stuart Pomerantz
Arrangements and DemosAlex Ade, Walter Meixner, Geri Pelok,
& Alex Terzian
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Visible Human Conference, 2002
Visible Human Browsers: Formative Evaluation Based on Student Feedback
Neil Skov, EdD ([email protected])
Wen Yu Lee, MS
Deborah S. Walker, DNSc,CNM, FACNM
Carl Berger, EdD